To reassemble and install the strut assembly, follow the reverse order of disassembly. Fit the strut into the compressor. Compressed the coil spring. Then install the upper spring seat and related components. Release the spring compressor and it is ready to install the strut in the car.
Lift the strut into position in the upper body mount. Attach the lower end of the strut to the steering knuckle or bearing support. Align your reference marks. Install and torque the fasteners to the specifications. Install any other parts as needed and recheck your work thoroughly.